Lamara Bell remains in hospital in a serious condition after being left in a car wreck for three days because police failed to respond to it

A mother-of-two who lay injured in a car for three days next to her partner's dead body because police failed to respond to their crash will be in hospital for months, her mother has said.

Lamara Bell, 25, is in a coma in Glasgow’s Queen Elizabeth University Hospital, where she is said to be in a serious condition.

The mother-of-two was taken there on Wednesday after lying injured in her wrecked Renault Clio with the body of John Yuill, her 28-year-old partner, for three days after they crashed off the M9 near Bannockburn, Stirlingshire.

Police Scotland were alerted to the crash on Sunday but did not attend the scene until a second report was made on Wednesday. The force is being investigated for the blunder which, some fear, may have worsened Miss Bell's condition.

Today her mother, Diane Bell, revealed she would be in hospital for months.

Speaking to The Scottish Sun, she said: 'She will be in hospital for a good few months. We don’t know what she is going to be like.'

Meanwhile her father, Ossie Dinnefash, made a heartbreaking plea for his daughter's health online.

'I can't speak or even think properly, I try to move and feel like a spear has entered into my heart, all that comes from my head is the thing I happen to be staring at that time.'

He previously told of sitting by her bedside, singing her favourite song in the hope of waking her up.

'Tonight sitting beside Lamara's I started sing her favourite song from her childhood, Marti Pellow,' he wrote.

"'I feel it in my fingers, I feel it in my toes, love is all around me and so the feeling grows"'.

'I can't for the life of me finish it, I just want her to move her hand as I hold hers.

'Its a simple b****y stupid song but it brought her immense fun with so many giggles, with her face lighting up as she annoyed us to distraction!.

'Tonight I would give my life to hear her sing it once more.'

Revealing the mother-of-two had been taken off the ventilator that had been breathing for her, he added: 'One piece of victory to her.'

Police Scotland is facing serious questions over why it failed to attend the crash site when the Renault Clio was first spotted on Sunday.

Mr Yuill, a father-of-two, is understood to have died on impact whereas Miss Bell fell in and out of consciousness for three days as she lay in the wreckage

Police Scotland faced serious questions over why the car was left undetected by the side of the road today as officers combed the scene

A fire engine stands on call as police officers search the scene, where the crash occurred just off the M9

Miss Bell and Mr Yuill, a father-of-two, are thought to have crashed when they veered off the motorway. The pair had been camping with friends in Loch Earn but left in the early hours of Sunday morning without telling friends.

Wednesday 10.50am: More than three days after the crash police discover the couple in the wreckage of the car

Officers only attended the scene on Wednesday when a second call was made by another passer-by. The force's handling of the tragedy has been slammed as 'shocking', with some questioning whether an earlier response may have improved Miss Bell's chance at survival.

Mr Yuill is understood to have died upon impact. Speaking of his son's death yesterday, Gordon Yuill, said while nothing could have been done to save him, he feared Miss Bell's condition may not have developed so seriously if she'd been discovered earlier.

'It wouldn't have made any difference for John. His injuries were such that he died on impact. But I feel it may have made a difference for Lamara,' he told The Daily Record.

Yesterday Miss Bell's mother said her daughter was relying on life support and needed dialysis after becoming so dehydrated.

When fire fighters eventually reached her late on Wednesday morning, the 25-year-old believed she had only been lying there for 30 minutes.

On Thursday Police Scotland admitted receiving the first report on Sunday in a statement, but refused to answer further questions on the issue.

'We believe that this is connected to the ongoing missing persons search for John Yuill and Lamara Bell.

'As part of our investigation into this incident, it has come to light that a call was made to police late on Sunday morning regarding a car which was reported as being off the road.

'For reasons currently being investigated, that report was not followed up at the time.'

The Police Investigations and Review Commissioner is now investigating the incident.

Victims: John Yuill, 28, (left) and Lamara Bell, 25, (right) were reported missing on Sunday after they disappeared from a weekend camping trip. Officers found them yesterday in a crashed blue Renault Clio

The couple's car was left off Junction 9 on the M9 near Stirling for three days before police found them

This photograph of the couple's Renault Clio was shared online before they were discovered in the hope of finding them safe together

'The Crown Office and Procurator Fiscal Service has directed the Police Investigations and Review Commissioner to carry out an independent investigation into the circumstances surrounding the death of a 28-year-old man and serious injury of a 25-year-old woman following an incident at the M9 southbound near Junction 9 at Bannockburn on July 8,' a spokesman said on Thursday.

Local politicians have slammed the police's handling of the incident, with one likening the scenario to something found in the developing world.

'It makes me sick knowing they were they for all that time and she was lying there with his body

A friend of Miss Bell

'This is a truly shocking incident,' said Murdo Fraser, Conservative MSP for Mid Scotland and Fife.

'People lying unattended at the side of the road for days is something you'd be surprised to encounter in the Third World.

'The circumstances leading to this must be investigated as a matter of absolute urgency.'

A neighbour at Miss Bell's home said said she was 'shocked' it had taken so long for her to be found.

'It's absolutely shocking what's happened. I saw on the news the car was lying there for three days and the police did absolutely nothing about it.

'What kind of country are we living in where the police feel they can choose to ignore a car crash where people are injured,' the neighbour, who did not want to be named, said.

'It makes me sick knowing they were they for all that time and she was lying there with his body.

They were found near the M9 in Stirlingshire (file image above) on Wednesday morning after three days

'Thank God they were eventually found. I'll be praying for her. Something still has to be done about the police though. It's not acceptable at all for that to be allowed to go unpunished.

'I hope they get hung out to dry for this. It's as good as manslaughter.'

Outraged Scots flooded the Police Scotland page with complaints of its handling of the tragedy when it posted an update last night.

Siobhan Samson wrote: 'How can this happen? I regularly go to work via the M9 and the M876 and you seem to have plenty of vans to detect speeding and yet this emergency call seemed to have gone unexplored. How is that?'

Jackie Martin added: 'Absolute disgrace that these people have lay injured and dying for 3 days.'

A spokesman for the Scottish government said: 'Our thoughts are with the families of the couple concerned at this very difficult time.

'This matter has been referred by the Crown to the Police Investigations and Review Commissioner and will be taken forward appropriately.'

An investigation into the circumstances is to be carried out by the Police Investigations and Review Commissioner.